The AP reports:
An adviser to Allen, speaking on condition of anonymity because his boss had not formally decided to end the campaign, said the senator wanted to wait until most of canvassing was completed before announcing his decision, possibly as early as Thursday evening.
The adviser said that Allen was disinclined to request a recount if the final vote spread was similar to that of election night.
The victory puts Sen. Harry Reid, D-Nev., in line to become Senate majority leader. He has led the Democrats since Tom Daschle, D-S.D., was defeated two years ago.